Grain-cleaning mill.



H. E. HOINES.

GRAIN CLEANING MILL.

APPLICATION FILED JUL-129, 191a.

Patented Feb. 24, 1914.

A 314042144304 3% 5 aw wi/tmcooeo UNllTE S ATES HALVOR E. HOINES, OF MINNEAPOLIS, MINNESOTA.

GRAIN-CLEANING ll'iILL.

Application filed July 29,

and State oft ivlinnesota. have invented certam new and useful Improvements in Grain-Cleahing Mills, of which the following is a specification.

The present invention relates to improvements in grain cleaning mills, the object in view being to provide an auxiliary cleaning member by which certain characters of foreign seed or matter may be removed from the grain as it flows from one grading sieve to another. To this end I provide a conveyer member disposed in the path of low of the grain and. upon which the grain falls. said eonveyer comprising; an endless apron ot' unfinished -fabric designed particularly to catch the lighter or foreign seeds in the grain not removed. by the usual blast.

it is furthermore an object of my construction that the conveyor operate in a direction opposite the flow of the grain for conveying the foreign seed to point where it may be removed by a conveyor cleaner disposed .in a position to coiipe "ate with the conveyor aforesaid.

Still a further object of the invention is to provide means for insuring" that the grain will not pass over the edges of the conveyor in its passage thereover.

lVith these and other objects in view. my invention consists of certain combinations, constructions. and arrangements oi? parts, all as hereinafter more fully described claimed and illustrated in the accon'ipanyinn drawings, wherein Figure l is a side elevation of a tanning mill constructed in accordance with my in vention; Fig. 9- is a detail perspective view of the fabric conveyer cooperatingwith the grading sieves; Fig. 3 is a detail perspective View of the conveyor cleaner; Fig. 41: is a fragmentary front view of the locking means for operably connecting the eonveyer cleaner for operation; and Fig. 5 is a similar view showing more clearly the locking means in side elevation.

Throughout the following detail description, and on the several figures of the drawings, similar parts are referred to by like reference characters.

Specifically describing; my invention, the numeral 1 designates a frame of suitable term and construction having secured at Specification of Letters Patent.

Patented Feb. 24:, 1914.

1913. Serial No. 781,812.

l the top portion of the same the grain hopper The hopper 2 is of the usual constrmrtion and the grain is designed to flow trom the same upon the shaking or reciprocating sieve 3 connected at one end to the hopper by means of the link a and supported near its opposite end by the shaker arm 7 pivoted intermediate its length upon the transven-te frame member 6, said arm having connected to its lower end the connecting rod 7. which is in turn connected to the sprocket wheel 8 fixedly secured upon the shaft of the tan 9 mounted in the usual fan drum 10.

it is to be noted that the reciprocating sieve 3 inclines downwardly from the hopper and from its lower end the grain to be cleaned drops into a V-shaped chute 1] through which it passes onto the endless conveyor 12 disposed at an abrupt incline in a direction opposite to the incline ot the sieve 3 and near the upper portion of the lower stationarv inclined grading sieve 13. 'lhe conveyor 12 is mounted for movement about the roller 14 secured in the sides of the inclined sieve 13 and the upper roller 15 supported by means of the arms 16. The

con cyer is con'iposed preferably of an unfinished i'abr and stretched tightly about the rollers. movement being imparted to said conveyer by means of the driving chain 17 which passes around the sprocket 18 on the shaft 19 to which is also secured the pin- 1 21 secured to the end of the roller 15, said driving chain 17 passing around the s n'ocket R tor imparting rotary motion to the tan fl in the usual manner, as well as reciprocating motion to the sieve 3 through the medium of the connecting: rod T and the shaker arm 5. said chain being driven by the sprocket 17'.

(in the shait't 19 is provided a conveyor cleaner ('ifillSlSlilIlQ of a plurality of blades 22 arranged so as to contact with the conveyer .12 when rotated by the driving chain passing" around the sprocket 18.

In the use of the invention it will be under-- stood that the mill is operated by revolving the driving sprocket 17 to which is secured a. handle 23, the grain passing from the hopper 2 onto the shaker sieve 3, and from said sieve through the chute 11 onto the conveyor 12, the lighter foreign matter being separated during its passage to this point by means of the blast from the fan 9. said blast, however,

on. 20 intermeshimr with the large pinion not being suflicient to remove, ordinarily, l foreign seeds which are contained by said certain characters of foreign seed, such for l instance as wild which are caught by the fabric conveyer 12 before the grain reaches the lower grading sieve 13 from which it passes in the cleaned condition. The conveyor 12 moves in a direction opposite to the flow of the grain to the sieve 13 and as it passes around the roller 15 the blades 22 impinge against the ccnveyer and l remove the foreign s ed can.

in order to prevent the rain from passing laterally off of the conveyer 12 I provide a longitudinally curved guard plate secured at each side of thc conveyer to the sic es of the sieve 13, as most clearly shown in Fig. 2 of the draw The guard plate 2%, by reast n of its curred inner fa e, turns L upwardly the edges of the upper portion of the conveyor 12 and this tends to keep the grain upon said conveyer until it passes therefrom onto the sieve 13.

Under certain conditions it may be dc- 1 sired to disconnect from operation the conveyor cleaner on the shaft 19 and for this purpose I have prorided the shaft 1%) with an enlarged extremity 19" having a notch 19 in its periphery. To the sprocket 16 is secured a leaf spring free end against a pawl pivotally mounted upon the pin 2? carried by said sprocket wheel. lihen the p "l 26 is in its horizontal position, shown most clearly in Fig. in full. lines, engages in tl shaft 1 and the crnreyer cleaner is thus connected fo operation by the driving chain 17. i /hen, however, the pawl 26 is raised, the spring holding said pawl in either of its positions hereinbefore mentioned, the sprocket wheel 18 which is loosely mounted upon the shaft- 19 disconnects the conveyor cleaner. The disengagement of the pawl from the notch not only disconnect-s the con- -veyer cleaner as hereinhefore described but also prevents operation of the conveyor 12 which is rotated through the medium of the pinion 20 carried by the shaft 19.

it will be apparent from the foregoing l wheel l hearing at its E ie notch 19 on thei l l l 16* scriition that the rain will not onlv be i cleaned of the general foreign matter of a lighter character than the grain but also the l the invention, what a g the grain, blast means a conveyer i nber to 0 ing foreign seed from t grain, said con veyer niei her operating n a direction opposite to the iow of said grain, a conveyor c eaner for removing foreign seed from the onveyer, a shaft for said cleaner, gearing atoning and removhe i the shaft with the c nrcyer, common operating means for the blast n eans, he conveyor, and conveyer cleai er, including a drive sprocl'et on the shaft aforesaid, and means for connecting or (ilisconnecting the sprocket with or from the shaft to there 7y operate or render inoperative the conve er member and conveyer cleaner.

in a cleaning inill, the combination of shaking sieve to receive the i :he hopper, a blast member for tie "rain flowing over the shaling fabric conreyer adapted to receive i from the shaking sieve, means for said conveyer in a direction oppote the dew of the grain, said means also operating the blast member and shaking sieve, a stationary grading sieve adapted to receive the grain from the convey-er aforea guard plate cooperating with the edges of the conveyer, a convey-er clcane disposed beneath the conveyor, a shaft upon which said cleaner is mounted, a sprocket wheel carried by said shaft, and a locking member carried by the sprocket wheel and adapted to engage the shaft to permit operaton of the conveyor clear er by the operating means for the blast and convever afor said.

in testimony whereof aflin in presei'ice of two witnesses.

HiiLVOR E.

my signature nons s.

Goples of this patent may be obtained for five cents each, by addressing the "Commissioner of Ieten'ss,

- Washington, D. C. 

